三步孤立实激发技术在原子自电离态光谱测量中的应用

三步孤立实激发技术是一种有效的测量原子自电离态光谱的方法．将该技术结合激光偏振组合应用于碱土金属Ba原子的光谱测量，获得了具有不同总角动量的Ba原子自电离态光谱，其中大部分为首次获得的数据．测量结果和理论计算结果进行比较，结果相当令人满意．     

论我国三线企业的根本性改造

论我国三线企业的根本性改造ＥｓｓｅｎｔｉａｌＴｒａｎｓｆｏｒｍａｔｉｏｎｏｆＣｈｉｎａ＇ｓ“ＥｎｔｅｒｐｒｉｓｅｓｉｎＲｅｍｏｔｅＡｒｅａｓ”￥／／刘洪海（北京中国发展战略学研究会北京１０００５３）编者按当今国际舞台上的竞争越来越趋向以科技为主导，以...     

一种基于色料混合理论的配色仿真算法

以工业配色应用为背景，首先探讨了计算机配色的两种基本理论：三刺激值理论与色料混合理论，然后分析了基于色料混合理论的织物染色算法的不足，提出了一种新的配色仿真算法，并应用于涂料配色实践。从仿真结果来看，该配色仿真算法计算精确，能够有效地减小配方色差。     

小水线面三体船阻力试验研究

提出了一种阻力性能优良、船长排水量系数小的高速小水线面三体船型。对这种船型进行了2种主体型线、9种侧体布局的阻力试验，分析研究了阻力性能，讨论了船长排水量系数和侧体布局对阻力性能的影响。并给出了与细长型三体船阻力试验的对比结果。     

圆饼卫星三轴姿态控制

利用卫星低轨道两个主要环境力矩 (重力梯度矩和地磁力矩 )对卫星三轴姿态进行控制。卫星的形状为圆饼状 ,用以获得所需的重力梯度矩。卫星上的永久磁棒获取所需的地磁力矩。为了提高卫星的姿态精度 ,沿永久磁铁方向安装一反作用飞轮。对卫星在圆轨道的姿态进行了分析 ,并给出仿真结果。从分析和仿真结果可以看出 ,此卫星具有结构简单、姿态稳定、精度高等优点。     

机电传感器的特征化及其特征参数的确定

本文指出用Z参数和ABCD参数分别表示机电传感器在接收状态和发生状态下的网络参数是方便且合理的。然后本文规定接收器灵敏度和发生器发射电压和电流响应作为其相应的特征化参数。进而,本文提出一个三参数模型描述传感器的行为,并发展一个复数最小二乘拟合Fortran计算方法求出数学介。这样,机电传感器的网络参数和特征化参数可从它的一组电阻抗和负载阻抗数据对确定。     

织物几何结构与织物织缩率的研究

在织物结构相与织物的紧度关系理论中增加了八枚缎纹组织，完善了常用组织的结构相参数．织物结构相变化与织物紧度的变化存在至相效应迟钝，在织物设计中应选择合适的组织和紧度，以便于实际生产．织物结构相与织物织造缩率的变化接近线性变化，无至相效应迟钝．所有组织织物的织编率都在以平纹组织织物的织编率为科边的直角三角形区域内，提供了织物织编率与织物组织在织物设计中选择的依据，也是联合组织各组织部分密度设计的依据．     

三色伊蝇蛆病流行规律和环境防治

三色伊蝇蛆病流行规律和环境防治严如柳，陈美，刘荫奎，黄秀莲（厦门大学生物学系）（仙游县畜牧兽医站）三色依蝇（ＩｄｉｅｌｌａｔｒｉｐａｒｔｉｔａＢｉｇｏｔ），幼虫在猪舍里，夜间钻进猪皮肤吸吮血液，引起蝇蛆病．本病在国外尚未见报道，国内主要见于江苏省的江...     

Effects of truncated mutants of the ε subunit of chloroplast ATP synthase on the fast phase of millisecond delayed light emission of chloroplast and its ATP synthesis ability

The ε subunit of the chloroplast ATP synthase and the truncated ε mutants which lack some amino acid residues from the N-terminus or C-terminus were overexpressed in E. coil When the ε subunit or the truncated ε proteins was added to the spinach chloroplast suspension, both the intensity of the fast phase of millisecond delayed light emission (ms-DLE) and the cyclic and noncyclic photophosphorylation activity of chloroplast were enhanced. With an increase in the number of residues deleted from the N-terminus, the enhancement effect of the N-terminal truncated proteins decreased gradually. For the C-terminal truncated proteins, the enhancement effect increased gradually with an increase in the number of residues deleted from the C-terminus. Besides, the ATP synthesis activity of ε-deficient membrane reconstituted with the ε subunit or the truncated ε proteins was compared. The ATP synthesis activity of reconstituted membrane with the N-terminal truncated proteins decreased gradually as the number of residues deleted from the N-terminus increased. For the C-terminal truncated proteins, the ATP synthesis activity of reconstituted membrane increased gradually with an increase in the number of residues deleted from the C-terminus, but was still lower than that of the wild type ε protein. These results suggested that: (a) the N-terminal domain of the ε subunit of the chloroplast ATP synthase could affect the ATP synthesis activity of ATP synthase by regulating the efficiency of blocking proton leakage of ε subunit; and (b) the C-terminal domain of the ε subunit of the chloroplast ATP synthase had a subtle function in modulating the ATP synthesis ability of ATP synthase.     

Cyclotrimerization of nitriles catalyzed by Li<Subscript>3</Subscript>N

Nitriles were unexpectedly trimerized into s-triazines or amino-pyrimidines in high yields in the presence of catalytic amount of Li3N, resulting in a simple, solvent-free and easy-to-scale-up one-pot way to synthesize s-triazines and 4-amino-pyrimidines with high yield.